Add processor info dumping to non-legacy mesh draw ops

Change-Id: I2ee77f0971a1b627905ac547bc0511042c40ac38
Reviewed-on: https://skia-review.googlesource.com/19816
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrAAStrokeRectOp.cpp b/src/gpu/ops/GrAAStrokeRectOp.cpp
index 82b4ec1..e423583 100644
--- a/src/gpu/ops/GrAAStrokeRectOp.cpp
+++ b/src/gpu/ops/GrAAStrokeRectOp.cpp
@@ -184,7 +184,8 @@
                     info.fDevOutsideAssist.fBottom, info.fDevInside.fLeft, info.fDevInside.fTop,
                     info.fDevInside.fRight, info.fDevInside.fBottom, info.fDegenerate);
         }
-        string.append(INHERITED::dumpInfo());
+        string += fHelper.dumpInfo();
+        string += INHERITED::dumpInfo();
         return string;
     }